mistake vs prevaricate

mistake

verb
  • To understand wrongly, taking one thing or person for another. 

noun
  • An error; a blunder. 

  • A pitch which was intended to be pitched in a hard-to-hit location, but instead ends up in an easy-to-hit place. 

prevaricate

verb
  • To shift or turn from direct speech or behaviour; to deviate from the truth; to evade the truth; to waffle or be (intentionally) ambiguous. 

  • To undertake something falsely and deceitfully, with the purpose of defeating or destroying it. 

  • To collude, as where an informer colludes with the defendant, and makes a sham prosecution. 

How often have the words mistake and prevaricate occurred in a corpus of books? (source: Google Ngram Viewer )